%%
%% The LaTeX Companion, 3ed
%%
%% Example 6-7-5 on page I-478 in "multirow --- Vertical alignment in tables".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{111.0pt}
%StartShownPreambleCommands
\usepackage{multirow}  \renewcommand\multirowsetup{\raggedleft}
%StopShownPreambleCommands

\begin{document}
\begin{tabular}{|l|l|l|}                         \hline
  C1a & C2a & C3a                             \\ \hline
\multicolumn{3}{|c|}{\multirow{2}{25mm}{Spanning 2 rows
                                        \& 3 columns}} \\
\multicolumn{3}{|c|}{}                        \\ \hline
  C1d & C2d & C3d                             \\ \hline
\end{tabular}
\end{document}
